what is the output and how we get???

Question

<?php
$result = 2. "2";
echo 2. $result-$result;

?>

Answer 1

Trying your code in playground raises the follwoing error :
Parse error: syntax error, unexpected '"2"' (T_CONSTANT_ENCAPSED_STRING) in ..\Playground\ PHP Parse error: syntax error, unexpected '"2"' (T_CONSTANT_ENCAPSED_STRING) in ..\Playground\

What do you want exactly to do ?